Xeon EC5539 's Advantages
Higher base frequency (2.266GHz vs 2GHz)
Xeon E 2278GEL 's Advantages
Released 9 years and 4 months late
Higher specification of memory (2666 vs 1333)
Newer PCIe version (3 vs 2)
Larger L3 cache size (16MB vs 4MB)
More modern manufacturing process (14nm vs 45nm)
Lower TDP (35W vs 65W)